1	package antlr;
2	
3	/**
4	 * <b>SOFTWARE RIGHTS</b>
5	 * <p>
6	 * ANTLR 2.5.0 MageLang Institute, 1998
7	 * <p>
8	 * We reserve no legal rights to the ANTLR--it is fully in the
9	 * public domain. An individual or company may do whatever
10	 * they wish with source code distributed with ANTLR or the
11	 * code generated by ANTLR, including the incorporation of
12	 * ANTLR, or its output, into commerical software.
13	 * <p>
14	 * We encourage users to develop software with ANTLR. However,
15	 * we do ask that credit is given to us for developing
16	 * ANTLR. By "credit", we mean that if you use ANTLR or
17	 * incorporate any source code into one of your programs
18	 * (commercial product, research project, or otherwise) that
19	 * you acknowledge this fact somewhere in the documentation,
20	 * research report, etc... If you like ANTLR and have
21	 * developed a nice tool with the output, please mention that
22	 * you developed it using ANTLR. In addition, we ask that the
23	 * headers remain intact in our source code. As long as these
24	 * guidelines are kept, we expect to continue enhancing this
25	 * system and expect to make other tools available as they are
26	 * completed.
27	 * <p>
28	 * The ANTLR gang:
29	 * @version ANTLR 2.5.0 MageLang Institute, 1998
30	 * @author Terence Parr, <a href=http://www.MageLang.com>MageLang Institute</a>
31	 * @author <br>John Lilley, <a href=http://www.Empathy.com>Empathy Software</a>
32	 */
33	/**A GrammarElement is a generic node in our
34	 * data structure that holds a grammar in memory.
35	 * This data structure can be used for static
36	 * analysis or for dynamic analysis (during parsing).
37	 * Every node must know which grammar owns it, how
38	 * to generate code, and how to do analysis.
39	 */
40	abstract class GrammarElement {
41		public static final int AUTO_GEN_NONE = 1;
42		public static final int AUTO_GEN_CARET = 2;
43		public static final int AUTO_GEN_BANG = 3;
44	
45		/*
46		 * Note that Java does static argument type matching to
47		 * determine which function to execute on the receiver.
48		 * Here, that implies that we cannot simply say
49		 * grammar.generator.gen(this) in GrammarElement or
50		 * only CodeGenerator.gen(GrammarElement ge) would
51		 * ever be called.
52		 */
53		protected Grammar grammar;
54		protected int line;
55	
56	
57		public GrammarElement(Grammar g) {
58			grammar = g;
59		}
60		public void generate() {;}
61		public int getLine() {
62			return line;
63		}
64		public Lookahead look(int k) { return null; }
65		public abstract String toString();
66	}
67